Display packer&#39;s container



Feb. 25, 1930. w. B. SMITH A DISPLAY PACKERS CONTAINER Filed March 5, 1929 gwuzntoz MAM/7M B, 5/1/7/1 JWW ' ularly to a container inent with the panel. 30

Patented eb. 25, 1930 UNITED STATES PATENT OFFICE WILLIAM B. SMITH, OF BALTIMORE, MARYLAND, ASSIGNOR TO OONTINENTAI: CAN.

. COMPANY,'ING., OF NEW YORK, N. Y., A CORPORATION OF NEW YOIQK Application filed March 5,

The invention relates to new and useful improvements in containers, and more particcontainer used by packers for hermetically packaging food products. This application is a continuation in part of my prior application, Serial No. 271,195, filed April 19, 1928.

An object of the invention is to provide a hermetically sealed metal container having a transparent panel closing one end thereof through whi h-the contents of the container may be viewed.

In the drawings:

Figure 1 is a vertical sectional View through a container embodying the improvements.

Fig. 2 is a side view ofa portion of the container.

Fig. W having a slightly modified form of structure. I

Fig. 4 is a view on an enlarged scale showing the transparent panel placed in the container and prior the container for sealing and securing the panel to the container.

Fig. 5is a view similar to 4 but showing the edge p0 tion of the b0 y wall of the.

container as being partly curled for engage- Fig. 6 is a view similar to Fig.4 but showing the edge portion curled into intimate contact with the transparent panel and the panel pressed onto its seat and the end panel sealed thereto.

The invention is directed to a container in which food products may be hermetically sealed. Thebody portion of the container is preferably cylindrical. body portion is closed by a transparent panel, preferably of glass, while the other end is closed by the ordinary metal end secured thereto by a double seam. The cylindrical body is first made with aflange at one end thereof, and the other end is provided with an inwardly projecting bead, the outer face of which forms a seat for a gasket, and for the glass panel. 'The glass panel is preferably provided with a central depression on its outer face in which a chuck could be placed for centering and rotating the panel and c0n 4 substantially the same as the inner diameter 3 is a side view of a portion of the to the shaping of the wall of One end of the.

DISPLAY PACKEBS CONTAINER 1929. Serial No. 344,457.

tainer body to seal the panel thereto. This glass panel is also preferably provided with tend along the" inner face of the inwardly projecting bead. The glass panel is inserted in the end of the container body against the seat formed bythe inwardly projecting bead. Elastic packing of considerable thickness is placed between the panel and the seat formed the bead. The diameter of the panel is of the cylindrical body, and after the panel has been placed on the seat as stated, then the end portion of the wall of the container body is curled or rolled by a suitable curling roller into intimate contact with the panel forcing the panel against its seat and thus sealing the panel to the container. After the container has been thus provided with a glass panel in one end thereof itis ready for the packers an inset shoulder, which is adapted to exuse. The packer fills the container and then applies the end thereto which is joined by a double seam. I

Referring morein detail to the drawings, the container is shown as including a cylindrical metal body 1, one end of which is closed by a glass panel 10. 'The edge por-.

tions of the cylindrical body are joined by a a side seam. This side seam is in part formed by interlocked edge portions as indicated at 4 in the drawings. It is also formed in part by overlapped edge portions as indicated at 5' in the drawings. The cylindrical body after it is thus formed is provided with an inwardly projecting head 6, which is adjacent one end thereof. The other end is pro-- vided with the usual fiange(so that the metal end 7 may be secured thereto by a double seam, indicated at 8. It is understood that this end portion which is double seamed onto the container bodyis not attached until after the container is packed, and this is accomplished' by the packer with the usual closing machine.

The inwardly projecting bead 6 forms a seat 9. This end of the container forthe seat 9 is closed by a glass'panel 10. The glass panel 10 is of substantiallythe Same tained on the panel as a diameter as the inner diameter of the container. The glass panel is formed with a recess 11in its outer face which is circular and centered relative to the panel. This glass panel is also provided with a shoulder 12, Which is inset so that the diameter of the portion of the panel at the shoulder 12 is substantially the same as the inner diameter of the bead i Between the panel 10 and the seat 9 is placed a packing 13. This packing is completely housed between the under face of the panel and the seat on the container body, and the shoulder on the glass panel so that the contents of the container does not at any time come in contact with the gasket and become flavored or contaminated hereby. The under face of the panel which engages the packing is preferably provided with a rib 14. The purpose of this rib is to retain the packing on the face of the panel permitting the packing to be formed from a plastic sealing substance on the panel and to be reunit therewith. It is understood, however, that the packing may be placed on the seat on the container and may be formed independently of the seat or the panel and placed between the panel and the seat. It is essential however that this packing shall have considerable thickness so as to form a yielding seat for the panel. After the panel has been placed on the seat formed by the inwardly projecting bead, the extreme edge portion of the body wall of the container is subjected to a curling roller, indicatedat 15 in the drawings. This curling roller is provided with a vertical wall 16, which extends down along the outer wall of the container body. It is also provided with a horizontal cylindrical face 17.

Between the vertical wall 16 and this horizontal face 17 is a curling roller18. The roller rotates and travels along the edge of the wall of the container body. This is accomplished either by a bodily movement of the roller or by rotating of the container.

- While the container is rotated the central depression in the glass panel serves to receive the chuck used for the rotating of the container. When the curling roller is moved down onto this edge portion of the body wall of the container it will cause the extreme outer edge portion to curl, as indicated at 19 in the drawings (Fig. 5). During this curling of the edge portion the vertical wall 16 prevents outward bending of the portion adjacent the edge and insures that the edge portionwill be curled over the panel. This pressure which curls the edge of the wall of the container body is in a direction substan-' tially parallel with the wallof the container body, and is received wholly .by the Wall of thecont ainer body. In other words, the glass panel at this time is underno appreciable strain of pressure, the curling roller continuing its downward movement until the curled portion 19 is turned flat against the outer face of the glass panel thus forming a securing flange 20. When the edge portion of the container wall makes engagement with the outer face of the panel, the continued pressure will force the panel in'a direction toward the seat and against the yielding packing. This will compress the packing and make avery tight hermetic seal between the panel and the body wall of the container. To whatever extent the packing may be compressed by the forcing of the panel toward the seat, the metal will be curled so as to grip and hold the panel in its final seated position. The tendency of the pressure on the wall of the container to collapsethe wall at the bead of 6 causes said bead to engage the shoulder 12 of the panel and this sustains the bead from collapsing. Thus it is that the panel is secured to the container body by a very tight seal joint so that the container after being finally closed can be processed. The only closing strain exerted on the glass panel is the pressure of the panel against the yielding packing, and this avoids any tlzrushing force on the glass forming the pane As noted above, the glass panel is applied to the container body by the manufacturer of the container after which the container is filled and closed with a metal end which is double seamed thereto by the usual closing machine used by the packer. The method of securing the glass panel to the body por- 'tion of the container described above is described and claimed in my co-pending application, Serial No. 344,458, filed of even date herewith. The method has, however, been set forth in detail herein as it is believed that the new features of applicants container will be best understood by this description of the method'of making the same.

It will be noted that the side seam of the container is in part an interlocked seam, and in part a lapped seam. The lapped portions extend to a point below the bead and this greatly facilitates the forming of the bead, and also the forming of the retainer flange at the outer edge of the body 1 which secures the' panel. I

In Fig. 3 of the drawings a slightly modified form of my construction is shown which makes the container very easy to open. In this form of the invention the'body portion of the container is provided with two score 1ines 21 and 22 which are spaced from each other,'thus forming a rip strip 23. Said rip strip is provided with a projecting tongue 24 on which a key may be placed for tearing out the rip strip 23. When this rip strip is removed then the glass panel removed from the container. By providing can be readily the panel to be used for reclosing purposes after the container has been opened. This shoulder will retain the glass panel on the container body aftcrthe rip strip is removed sufficient for handling purposes.

It will be apparent from the above that there has been provided a metal container which may be hermetically sealed, and which is provided with a. transparent end panel through which the contentsof the container may be viewed. The means for securing the glass panel to the container body holds the said panel in sealing contact therewith and the closure can be effected without any liability of breaking the glass panel. The glass panel rests on an elastic packing and during the processing any variation of the expansion between the metal and the glass will be readily taken care of by the packing.

It is obvious that minor changes in the details of construction and the arrangement of the parts may be made without departing from the spirit of the invention as set forth in the appended claims.

WVhat I claim as new and by Letters Patent, is

1. A display packers container comprising a metal body having an inwardly extending desire to secure bead adjacent one end thereof forming a seat,

a glass panel on said seat, and an elastic packing between the panel and the seat, said body portion having a continuous annular flange engaging the outer face of the panel and formed by a gradual rolling of the edge portion into flat contact with the panel by a pressure applied thereto in a direction lengthwise of the body of the container whereby said panel is pressed against the packing and is held in sealing contact therewith by said flange.

2. A display packers container comprising a body having an inwardly extending bead adjacent one end thereof forming a seat,

glass panel and holding said panel in sealing contact with the packing and the packing in sealing contact with said seat.

In testimony whereof, I affix my signature.

VILLIAM B. SMITH.

a glass panel on said seat, said panel having a shouldered portion on its inner face disposed adjacent the inner face of said bead, an elastic packingbetween the panel and said seat,

said shouldered portion of the panel operating to housesaid packing and prevent the contents of the container from contact therewith, said body having a continuous annular flange engaging the outer face of the panel and formed by a gradual rolling of the edge portion into fiat contact with the container by a pressure applied thereto in a direction lengthwise of the body of the container whereby the glass panel is pressed against the packing and held in sealing contact therewith by said flange.

3. A display packers container comprising a metal body having an inwardly extending bead adjacent one end formed integral with the body and providing a seat, a glass panel having an annular cut away portion in its outer lower edge forming a vertical 

